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2120
4. Fuel consumption rate calculation
Question: If 120 gallons of fuel are consumed in 30 minutes’ flying time, what
is the fuel consumption rate?
Solution: Align the 12 of the outside scale with 30 of the inside scale. The
SPEED INDEX (Y) now points to 24, and the answer is 240
gallons per hour.
5. Fuel consumption calculation
Question: How much fuel is consumedin 6 hours at a fuel consumption rate of
250 gallons per hour?
Solution: Align the 25 of the outside scale with the inside scale’s SPEED
INDEX (Y) of the inside scale. The 6:00 is aligned with 15, and the
answer is 1500 gallons.
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